I am studying for the technician exam and I have come across the section on carrier waves, basebands, and various kinds of modulation.
It makes sense to me that you create a signal by combining the baseband, which carries data, with the carrier signal (a sine wave of some kind) before transmitting.
My question is - why? What would stop us from just transmitting the raw data (voice or whatever) as it is? My guess is that "voice" frequencies for example are in the range of 300hz - 3000hz and we need to "boost" them up to the frequency we are on (for example 167.000 MHz). However this is just a guess.